ASTROSAT CZTI

Data Quality Report

Orbit 42387

Creation date: 2024-06-27T22:39:41.675915
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C06_010T01_9000005800_42387cztM0_level2.fits modeM0/AS1C06_010T01_9000005800_42387cztM0_level2_quad_clean.evt
Size (bytes)313,024,32088,257,600
Size298.5 MB 84.2 MB
Events in quadrant A2,759,639611,218
Events in quadrant B2,452,398607,093
Events in quadrant C2,768,516572,644
Events in quadrant D3,223,952537,094

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109952
B0104982
C0112062
D0127732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A491180.162900%
B4912240.488599%
C4912791.608306%
D49121282.605863%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7005 4912 5 5 0.07% 0.10%
B 7006 4913 17 17 0.24% 0.35%
C 7006 4913 55 55 0.79% 1.12%
D 7006 4913 91 91 1.30% 1.85%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 555260 4876.39 562 551 113.8
A 13 6 14503 122.65 562 551 113.8
A 13 254 8059 66.0 562 551 113.8
B 15 36 101397 967.71 550 536 104.2
B 4 141 38600 365.21 550 536 104.2
B 0 230 28585 269.12 550 536 104.2
C 14 254 425114 3435.67 537 539 123.6
C 15 214 208159 1680.06 537 539 123.6
C 8 79 17191 134.75 537 539 123.6
D 1 52 479879 3626.5 545 528 132.2
D 10 118 217080 1638.31 545 528 132.2
D 12 233 190882 1440.11 545 528 132.2

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter